2a thread class right-hand 0.145" thread length fillister head style 80 thread quantity per inch navy special project passivate screw surface treated unf thread series
2a thread class right-hand 0.312" thread length flat countersunk undercut head style 40 thread quantity per inch passivate screw surface treated unc thread series
2a thread class right-hand 0.390" thread length flat countersunk undercut head style 40 thread quantity per inch passivate screw surface treated unc thread series
3a thread class right-hand 0.218" thread length flat countersunk head style 40 thread quantity per inch passivate screw surface treated unc thread series
3a thread class right-hand 0.128" thread length flat countersunk head style 48 thread quantity per inch passivate screw surface treated unf thread series
2a thread class right-hand 0.152" thread length flat countersunk head style 56 thread quantity per inch passivate screw surface treated unc thread series
3a thread class right-hand 0.422" thread length flat countersunk head style 32 thread quantity per inch cadmium screw surface treated unf thread series